Shuttle.



M. CAMAGNL SHUTTLE.

APPLICATION FILED APR.8,1915.

1,166,742. I 1 Patented Jan. 4; 1916.

WITNESS INVENTOR,

WT I %,7ia am iy 'l A 'A Ira/w" MARIO CAMAGNI, PATERSON, NEW JERSEY.

SHUTTLE.

Specification of Letters Patent.

PatentedJan. 4, 1916.

Application filed April 8, 1915. Serial No. 19,873.

.This invention relates to the class of tension devices for shuttles inwhich a springactuated lever is employed having a longitudinal series ofeyelets which in the position which the lever normal-1y tends to as samecoact with other devices, as transverse pins, to maintain a series ofback-and-forth bends in the filling.

- Heretofore the eyelets have been so formed and related to the shank ofthe lever that when under the continual Wear of the thread or fillingnicks formed in them and in the pins, and in turn out the filling, theimmediate replacement of the eyeleted lever and the pins by new ones wasnecessary.

My object is to provide a tension device of this class so constructedthat its life, so far as the indicated kind of wear is concerned will bedoubled. This object I accomplish by forming each eyelet of the leverwith two distinct bends substantially equidistant from the point atwhichthe eyelet joins the shank of. the lever. the eyelet portion of thelever being adapted to be twisted or torsionally turned so as to bringfirst one and then the other into working proximity to the cooperatingseries of pins. I

In the accompanying-drawing, Figure 1 is a fragmentary longitudinalsectional view of a shuttle provided with my improved tension device;Fig. 2 is a plan view of the lever member; and,'Figs. 3 and 4 aretransverse sectional views showingr how the lever is twisted to bring;the corresponding;' ends at oneor the other side of the series ofeyelets ncXt to the thread guiding devices atforded by the fixedtransverse pins.

In the shuttle a there is fulcrumed on the transverse pin 1; a lever 0having eyelets d, and formed of wire as isusual in devices of this kind.Alter'hating with the eyelets d are the pins 6 having. their ends fixedin the side walls of the shuttle. An elastic band or other spring f,engaged with pin g, normally tends to hold the lever more or less in theposition shown in Fig. 1, so that the part of the thread or filling hwhich is made to alternately engage the devices d and c assumes azig-Zag form, as shown.

'lhelevcr c, as usual, is a piece of wire bent to form the spiraltransverse bearing portion i and a shank j, portions of the wire atintervals of the shank being twisted to form the eyelets d, the saideyelets being alined with each other.

Usually the eyelets are circular in crossscction', in consequence ofwhich when the thread cuts a nickin one or more of them and the pins ethe tension device soon becomes useless and in order to prevent breakageof the thread or filling has to be removed from the shuttle and replacedwith a new one. In the improved tension device, however, two distinctbends d and d" are formedin each eyelet substantially equidistant fromthe point of connection thereof with the shank j of the lever. At theoutset the series of eyelets (Z are tilted when seen in the endelevation of the lever so that all the bends at the one. side of theseries of eyelets arenearer the line of pins 0 than the bends at theother side of the series of eyelets. The shuttle is at first used withthe eyelets in the disposition just described.

Sooner or later the filling will begin to wear the eyelets at the point(1 in Fig. 3 and the pins e at the point c. When the wear becomessufiicient to be troublesome, the eyeletportion of the lever istorsionallv turned or twisted to bring the portions d of the eyelets thenearer to the pins 0. The thread will now hear at the points (1 of theeyelets and e of the pins. Thus the tension device may be used twice aslong as ordinary tension devices of this character.

The wire of the lever is usually tempered, so that the eyelets willresist the wear of the thread. To make it possible to torsionally turnor twist the eyelet portion of the lever, I anneal the part it of itsshank.

Having thus fully tion, what I claim as new and desire to secure byLetters Patent is:-

In a shuttle, the combination of a springpressed lever having a seriesof alined thread eyelets arranged in planes transverse to the lever, andcooperating devices around described my invenwhich to extend the threadalternating with said eyelets, each eyelet having substantiallyequidistant from the point of connection thereof with the shank of thelever relatively sharp threadq eceiving bends, and the eyelet-includingportion of the lever being adapted .to be twisted to bring thecorrespondingbends at the one or the other sicie' of the series ofeyelets next to the fixed thread-guiding devices. 10

In testimony whereof I aihx my signature.

MARIO CAMAGNI.

